// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "src/compiler/osr.h"

#include "src/compiler/frame.h"
#include "src/objects-inl.h"
#include "src/objects.h"
#include "src/objects/shared-function-info.h"
#include "src/optimized-compilation-info.h"

namespace v8 {
namespace internal {
    namespace compiler {

        OsrHelper::OsrHelper(OptimizedCompilationInfo* info)
            : parameter_count_(info->bytecode_array()->parameter_count())
            , stack_slot_count_(InterpreterFrameConstants::RegisterStackSlotCount(
                                    info->bytecode_array()->register_count())
                  + InterpreterFrameConstants::kExtraSlotCount)
        {
        }

        void OsrHelper::SetupFrame(Frame* frame)
        {
            // The optimized frame will subsume the unoptimized frame. Do so by reserving
            // the first spill slots.
            frame->ReserveSpillSlots(UnoptimizedFrameSlots());
        }

    } // namespace compiler
} // namespace internal
} // namespace v8
